package com.company作业;

import java.util.Scanner;

public class 第三章作业第三次作业第五题 {
    public static void main(String[] args) {
        Scanner LX = new Scanner(System.in);
        System.out.println("请输入菱形的边长");
        int BC = LX.nextInt();
        for (int i = 1; i <= BC; i++) {
            for (int j = 1; j <= BC - i; j++) {
                System.out.print(" ");
            }
            for (int k = 1; k <= 2 * i - 1; k++) {
                if (i == 1) {
                    System.out.print("*");
                } else if(k==1||k==2*i-1){
                    System.out.print("*");
                    }else {
                    System.out.print(" ");
                }
            }
            System.out.println();
        }
        for (int i = 1; i < BC; i++) {
            for (int j = 1; j <= i; j++) {
                System.out.print(" ");
            }
            for (int k = 1; k <= 2 * (BC - i) - 1; k++) {
                if (k == 1 || k == 2 * (BC - i) - 1) {
                    System.out.print("*");
                } else {
                    System.out.print(" ");
                }
            }
            System.out.println();
        }
    }
}